15031243441420 has 96 divisors (see below), whose sum is σ = 33116542599168. Its totient is φ = 5719966678272.

The previous prime is 15031243441399. The next prime is 15031243441433. The reversal of 15031243441420 is 2414434213051.

It is a super-3 number, since 3×15031243441420³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104034549 + ... + 104178931.

It is an arithmetic number, because the mean of its divisors is an integer number (344963985408).

Almost surely, 2^{15031243441420} is an apocalyptic number.

15031243441420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15031243441420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16558271299584).

15031243441420 is an abundant number, since it is smaller than the sum of its proper divisors (18085299157748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15031243441420 is a wasteful number, since it uses less digits than its factorization.

15031243441420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145639 (or 145637 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 15031243441420 its reverse (2414434213051), we get a palindrome (17445677654471).

The spelling of 15031243441420 in words is "fifteen trillion, thirty-one billion, two hundred forty-three million, four hundred forty-one thousand, four hundred twenty".